Rialway-car truck.



NO- 826,870. PATENTED JULY 24, 1906. S. OTIS. RAILWAY CAR TRUCK. `APPL1C1.\.T10N FILED 17202111905,

2262/2 (K5/v ymj UNITED STATESMPATENT OFFICE.

SPENCEROTIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL PATENT.

HOLDING COMPANY, OF RAPID CITY, SOUTH DAKOTA, A CORPORATION OF SOUTH DAKOTA.

Specication of Letters Patent.

Patented July 24, 1906.

Application Sled December 28, 1905. Serial No. 293,376.

To all whom it may concern,.-

Be it known that I, SPENCER OTIs, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Railway-Car Trucks, of which the following is a s eciiication.

My invention re ates to railway-car trucks, and has for its object to improve the construction thereof by providing therein anovel spring-hanger and a novel form of column.

Other objects of the invention will appear from the accompanying specification and claims.

In the drawings, Figure 1 is a side elevation, partly in section, of a truck embodying my invention. .,Fig. 2 is a 'detail sectional elevation on the line 2 of' Fig. 1. Fig. 3 is a transverse section on the line 3 ol Fig. 1, certain partsbeing omitted. Fig. 4 is a detail sectional view. Fig. 5 is an end elevation, partly in section, on the line 5 of Fig. 1.

In the accompanying drawings is shown one end of a truck having the usual upper and lower arch-bars and a tie-bar. The upper arch-bar a is made of rounded metal recessed at b b, having a flattened end a', secured to the journal-box casing in the usual manner. The recesses b b are on each side of the middle oint of the arch-bar. Hung in the recesses b ofthe up er arch-bar. is a depending hanger c, forme of an integral strip of spring metal bent into U shape with inturned sides, as shown. Supported by this hanger is a bolster comprising a vertical member c, formed of an I-beam, and a horizontal member e', formed of a channel member, these members being suitably secured together by rivets or otherwise. Suitabl secured to the lower flange of the vertical beam member is a clip f, provided on its under surface with rounded projections f', which rest in corresponding recesses g of a clip which rests u onthe spring-support c, the downturned en s of the clip g engaging the sides of the spring-support. Also secured at their uper ends in the depressions in the u per archar are the columns'd, composed o an outer tubular member d", having an upper flattened vertical extension d, recessed at d to provide a passage-way for the upper arch-bar. Within the tubular member is a' bolt d, also having a flattened upper ,bar of rounded metal I am enable end provided with a recess or passage-way, and this flattened u per end of the bolt has an overhanging lip 37, which rests upon the upper end of the flattened portion of the tubular member. The lower end of this'bolt member is secured b the usual nuts to the truck-frame. It willT be observed that by this construction the Wei ht is carried always at the center ofthe archar. It will further be seen that as the bolster swings to one side or the other the Weight is transferred partially from one of the proj ections f to the other, and the tendency is for the bolster to return to its central position. Byforming theu per archto make a much stronger bar for the same weight of metal, thus greatly strengthening this part of the truck. Itr will be observed also that the spring forming the hanger is extended when Weight is applied thereto and not compressed,

as is usually the case in devices of this kind.

It will be understood that the construction is the same on each side ofthe truck, though I have described the construction on one end only. It will also be understood that I in- 'of an upper. arch-bar substantially circular in cross-section and provided with recesses on each' side of its middle point,` a depending hanger formed of a strip of resilient metal having 'its upper ends resting in the recesses of the arche ar, and a bolster supported by the hanger.

2.V In. a railway-car truck, an up er archbar, a depending hanger formed o an integral strip of resilient metal hung thereon, and a bolster carried by the hanger.

3. The combination in a railway-car truck having the usual arch-bars of hangers formed of a stri of resilient metal hung from each side of tlie middle point of the'upper archbars, and a bolster carried by the hangers.

4. In a railway-car truck, the combination of spring-hangers, clip-members resting thereon provided with semiclrcular recesses and the bolster provided with corresponding clips having rounded projections engaging the recesses of the hanger-clips.

5. In arailway-car truck, a column com..

IOO

prising an outer tubular member having a recessed 'flattened upper extension and an inner bolt member also having a recessed flattened upper extension rovided With an overhanging lip engaging t e extension portion of the tubular member.

6. In a railway-car truck, a s ring-support for the bolster comprising a U- aped strip of resilient metal having inwardly-bent 0rtions, `whereby vthe Weight on the bo ster tends to extend the spring.

a strip of resilient meteu having itsy u per 15 ends enga ing the arch-bar, and a bo ster supported y the hanger.

SPENCER OTIS.

Witnesses:

ANNA L. SAVOIE, JENNIE MACEDWARD. 

